Cushion tire of the chamber type



Patented 27, 192.3,

', oFFlcE.

'JOHN Gaiam, or SOUTH Nonwoon, ENGLAND.

, CUSHION man or 'rHEeHamBEa Tyra.

Application le October 5, 1920. Serial No. 414,880.

To all whom t may concern.'

Be it'known that I, JOHN CAIRNES, a subject of the King of GreatBritain,'residing at 61V Clifton Road, South Norwood, in the county ofLondon, in England, have invented new and useful Improvements in andRelating to a Cushion Tireof the Chamber Type, of which the following isa specification.

This7 invention relates tov cellular band or like tires for vehiclewheels, such tires being f capable of taking the place of solid andtubular pneumatic tires without alterin the wheel or Wheel rim andcomprises a simplel and inexpensive construction while at the same timeretaining the resiliency of continuous tube pneumatic tires According tothis invention, the tire is provided wlth a succession of chamberslocated lsubstantially central therein, each vchamber being isolated'from. the others and having a single-and continuous transverse archedorlike rib running from side to side and across the roof thereof, thisrib 'being of substantially the same cross sectional ,area and formthroughout its length and closure plugs lfor sealing the chambers, and

, the tire as constructed vulcanized to a rim.

Reference is directed to the accompanying Kdrawings in which I haveillustrated the invention. 'A *l F1g. 1, 1s a cross section of mylmproved tire forcommerclal vehicles; Flg. 2, 1s a longitudinal sectionof the same; Fig. 3, is a crossseotion of my im roved tire suitable forlight vehicles; and ig. 4, is a cross section of the tire'on line a' wof Fig. 2, before connection to the rim.

.and roof whereby the tire is reinforced and prevented from spreadingoutwardly and causingfriction and cracking of the tire.' The chambersmay either be hollow or 'be filled with soft spongy rubber.

I claim:

A cushion tire comprising a rubber body portion, a series of chambersformed in the body portion, a series ofy relatively large openingsin thebase of the body portion one 00 vin alignment with each'chamber andcommunicating therewith, a stiening and clos ing plug in each opening toseal the chambers after 'moulding and a single continuous arched ribformed integral with the body 05 portion and extending transverselyacross the Vouter portion of each chamber, said rib springing frompoints adjacent the inner face. of thevclosingplug and being ofsubstantially' uniform cross sectional area 70 throughout its length,the said tire being vulcanized to a rim.

JOHN CAIRNES,

